68855899369 has 2 divisors, whose sum is σ = 68855899370. Its totient is φ = 68855899368.

The previous prime is 68855899313. The next prime is 68855899379. The reversal of 68855899369 is 96399855886.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45565171600 + 23290727769 = 213460^2 + 152613^2 .

It is a cyclic number.

It is not a de Polignac number, because 68855899369 - 2¹⁷ = 68855768297 is a prime.

It is a super-2 number, since 2×68855899369² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68855899295 and 68855899304.

It is not a weakly prime, because it can be changed into another prime (68855899379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34427949684 + 34427949685.

It is an arithmetic number, because the mean of its divisors is an integer number (34427949685).

Almost surely, 2^68855899369 is an apocalyptic number.

It is an amenable number.

68855899369 is a deficient number, since it is larger than the sum of its proper divisors (1).

68855899369 is an equidigital number, since it uses as much as digits as its factorization.

68855899369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1007769600, while the sum is 76.

The spelling of 68855899369 in words is "sixty-eight billion, eight hundred fifty-five million, eight hundred ninety-nine thousand, three hundred sixty-nine".